Level

Introduction

Is your table flat? Use the micro:bit as a level!

Step 1

Make a variable ||variables:x|| and store the ||input:acceleration x|| value in the ||basic:forever|| loop.

basic.forever(function() {
    // @highlight
    let x = input.acceleration(Dimension.X);
})

Step 2

Make another variable ||variables:y|| and store the ||input:acceleration y|| value.

basic.forever(function() {
    let x = input.acceleration(Dimension.X);
    // @highlight
    let y = input.acceleration(Dimension.Y);
})

Step 3

Add a code to test ||logic:if|| the ||Math:absolute value|| of ||variables:x|| is ||logic:greater than|| 32. If it is true, ||basic:show an icon|| to tell you that the micro:bit is not flat, ||logic:else|| show nothing, for now.

basic.forever(function() {
    let x = input.acceleration(Dimension.X);
    let y = input.acceleration(Dimension.Y);
    if (Math.abs(x) > 32) {
        // @highlight
        basic.showIcon(IconNames.Sad)        
    } else {

    }
})

Step 4

Add an ||logic:else if|| to check that the ||Math:absolute value|| of ||variables:y|| is ||logic:greater than|| 32. If it is true, ||basic:show an icon|| that tells you the micro:bit is not flat.

basic.forever(function() {
    let x = input.acceleration(Dimension.X);
    let y = input.acceleration(Dimension.Y);
    if (Math.abs(x) > 32) {
        basic.showIcon(IconNames.Sad)        
    } else if (Math.abs(y) > 32) {
        // @highlight
        basic.showIcon(IconNames.Angry)        
    } else {

    }
})

Step 5

The code under the ||logic:else|| will run if both acceleration x and y are small, which happens when the micro:bit is laying flat. Add code to ||basic:show a happy image||.

basic.forever(function() {
    let x = input.acceleration(Dimension.X);
    let y = input.acceleration(Dimension.Y);
    if (Math.abs(x) > 32) {
        basic.showIcon(IconNames.Sad)        
    } else if (Math.abs(y) > 32) {
        basic.showIcon(IconNames.Angry)        
    } else {
        // @highlight
        basic.showIcon(IconNames.Happy)        
    }
})

Step 6

If you have a micro:bit connected, click |Download| to transfer your code! Try it out on a table, counter, or window sill in your house!